SincereetaliThis is an air quality detector, using superior electrochemical sensing module, with high precision and stable performance, can accurately detect the carbon dioxide value. Large screen design, you can see the measurement data clearly. Different colors show different air quality. You can try. Features: The intelligent carbon dioxide value tester uses an air semiconductor sensor to monitor the temperature and humidity of air quality. Adopts superior electrochemical sensing module, with high precision and stable performance, can accurately detect the carbon dioxide value. Strong anti-interference ability, low consumption and long service life. The product does not need calibration, it can be tested after startup, and it can accurately detect carbon dioxide. Different colors correspond to different air quality, suitable for office, family and other occasions. Hundreds of ventilation holes on the back of the case not only accelerate the convection between air and the machine, thereby achieving effective detection, but also provide a fine heat dissipation effect. Widely applications: agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, etc. There are 4 types for you to choose, you can choose 3 in 1 white, 3 in 1 black, 5 in 1 white, 5 in 1 black according to your demands. 3in1: The large screen displays power, CO2 value, temperature and humidity. 5in1: The large screen displays power, CO2 value, TVOC value, HCHO value, temperature and humidity. Features: Name: Air Quality Detector Type: 5 in 1 Black, 3 in 1 Black, 5 in 1 White, 3 in 1 White (Optional) Battery: 1 * 3.7V, 2000mAh Lithium Battery (Included) 3 in 1: CO2 Detection Range: 100-5000 PPM, +50 +5% PPM CO2 Detection Sensitivity:?1PPM Temperature Measuring Range: -10 to 50? Temperature measurement accuracy: 1 Humidity measurement range: 0% to 99% RH Humidity measurement accuracy: 2% RH 5in1: CO2 detection range: 100-5000 PPM, +50 +5% PPM CO2 detection sensitivity: 1PPM TVOC detection range: 0-2.0 mg/m3 HCHO detection range: 0-0.6 mA/m3 Temperature measurement range: -10 to 50 Temperature Measuring Accuracy: 1 Humidity Measuring Range: 0% to 99% RH Humidity Measuring Accuracy: 2% RH Item Size: 90*70*40mm/3.54*2.76*1.57in Package Size: 138*95*47mm/5.43*3.74*1.85in Package Weight: 150g/5.29oz Packing List: 1 * Air Quality Detector 1 * Cable 1 * User Manual